Finding the Fourth Proportional to 644,236.21, 888,902.80 and 389,581.93
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Solution
The fourth proportional to 644,236.21, 888,902.80 and 389,581.93 is: 537,536.49
Step by Step Solution
- Step 1: Write the proportion equation
644,236.21 : 888,902.80 = 389,581.93 : x - Step 2: Convert to fraction form
644,236.21/888,902.80 = 389,581.93/x - Step 3: Cross multiply
644,236.21x = 888,902.80 × 389,581.93 - Step 4: Simplify right side
644,236.21x = 346,300,468,406.40 - Step 5: Solve for x
x = 346,300,468,406.40/644,236.21 - Step 6: Final answer
x = 537,536.49
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.